nBox is a Chrome extension that replaces the LinkedIn and X message UIs with one list. Search every conversation, see what still needs a reply, snooze the rest, and keep labels on the threads that matter. Your message history stays in the browser. nBox does NOT upload the inbox, send messages for you, or run LinkedIn or X actions in the background. Optional reply drafts exist. They run only on the open thread and stay off until you turn them on.